20899571

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{11801}}^1$

素因数の和:11842

約数の個数: 16

約数和(自身を含む): 27191808

約数和(自身を除く): 6292237

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 11801, 82607, 129811, 271423, 908677, 1899961, 2985653, 20899571]

約数ペア:

[(1, 20899571), (7, 2985653), (11, 1899961), (23, 908677), (77, 271423), (161, 129811), (253, 82607), (1771, 11801)]